streaming task paused, reason not-negotiated (-4)

[Weipeng HE]

Hi,

You might want to try add videoconvert in between:
gst-launch-1.0 v4l2src ! videoconvert ! autovideosink

I guess the video format (color space) you get from your webcam
(v4l2src) is not compatible with the sink.

Best,
Weipeng


On 10/08/16 15:58, pavan wrote:
> Hi, 
> 
>    I tried compiling and installing gstreamer 1.4.0 gst-plugins-base 1.4.0
> gst-plugins-good 1.4.0 on my raspberry pi B and tried to start gstreamer
> with the following simple pipeline.
> 
>                    gst-launch-1.0 v4l2src ! autovideosink.
> 
> but im getting error as v4l2src0: internal dataflow error
> streaming task paused, reason not-negotiated (-4).
> 
> and the launch process in getting terminated.
> 
> I have tried the same command many times earlier, both on my pc and
> raspberry pi but never faced this problem. Please provide me a solution to
> rectify this.
> 
> 
> 
> --
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